corrigendum : supply of polyurethane based sealant sikaflex 221 , polyurethane based sealant sikaflex 221 (grey/white) of m/s sika india or te roson pu92 of m/s henkel or equivalent conforming to clw specification no. clw/es/3/01 75 alt-9. pack size of 600 ml cartridge (in case of pack size is 310 ml cartridge then required qty. will be multiple of 2 of tender qty). note: as per para 10.2 clw specificatio n no. clw/es/3/0175 alt-9, tenderer may quote equivalent material stating the full tech nical parameters and product certification by national/ international standard organ zation and approval for application by govt. /psus. only when equivalent material is ma tching to equivalent to clw approved pu based sealant sikaflex or teroson product, t his shall be considered for approval [ warranty period: 12 months after the date of delivery ] ]